volcanic segment of the Colorado Plateau, in San Juan county, southeastern Utah, U.S. Abajo Peak (11,362 feet [3,463 metres]) is the highest point in the mountains, which comprise eight summits and are embraced by the Manti-LaSal National Forest. The...

mountain range, forming a section of the eastern rim of the Great Rift Valley in west-central Kenya, northeast of Naivasha and Gilgil and just south of the Equator. The range has an average elevation of 11,000 feet (3,350 metres) and culminates in Oldoinyo...

mountain segment of the northern Rocky Mountains, in northwestern Wyoming and southern Montana, U.S. Extending in a northwest-southeast direction, the range is 170 miles (270 km) long and 50 miles wide. A large plateau, the result of volcanic action,...

range in northern Honshu, Japan. It extends for 106 miles (170 km) north to south and parallels the Pacific Ocean coast of Fukushima prefecture in the Tōhoku region. Its southern end reaches into northern Ibaraki prefecture in the Kantō region. The mountain...

low range on the border of Brazil (Pará state) and southern Guyana. The mountains, which rise to about 2,000 feet (600 metres) above sea level, run in an east–west direction for about 80 miles (130 km) and form part of the northern watershed of the Amazon...

mountain in western Mendoza province, west-central Argentina, on the Chilean border. It is the highest point in the Western Hemisphere. Aconcagua lies in the Southern Andes Mountains; although its peak is in Argentina, its western flanks build up from...

mountain in southwestern Sri Lanka (Ceylon), 7,360 feet (2,243 m) high and 11 miles (18 km) northeast of Ratnapura; it is located in the Sri Lanka hill country. Its conical summit terminates in an oblong platform about 74 by 24 feet (22 by 7 m), on which...

mountains in northeastern New York state, U.S. They extend southward from the St. Lawrence River valley and Lake Champlain to the Mohawk River valley. The mountains are only sparsely settled, and much of the area exists in a primitive natural state,...

mountain in southwestern Togo, near the border with Ghana. An extreme western outlier of the Atakora Mountains of adjacent Benin, it rises to 3,235 feet (986 metres) and is the highest point in Togo. It was initially named for Oskar Baumann (1864–99),...

volcano, northeastern Bali, Indonesia. The highest point in Bali and the object of traditional veneration, it rises to a height of 9,888 feet (3,014 m). In 1963 it erupted after being dormant for 120 years; some 1,600 people were killed and 86,000 left...

mountainous region divided between the estados (states) of Minas Gerais and Espírito Santo, eastern Brazil, occupying an area of about 3,900 square miles (10,100 square km). The mountains form a crystalline-hill upland with an average elevation of 3,000...

group of granitic mountains rising sharply from the Sahara in central Niger. Several of these mountains approach and exceed 6,000 feet (1,800 m), the highest being Mount Gréboun (6,378 feet [1,944 m]). The mountains are dissected by deep valleys, called...

mountain range, western Pamirs, central Tajikistan. The mountains, extending north-south, are approximately 68 miles (110 km) in length and are composed mostly of sedimentary and metamorphic rocks, together with some granite. Glaciation from permanent...

mountain range of northeastern Libya that extends along the Mediterranean coast for about 100 miles (160 km) in an east-northeasterly direction between the towns of al-Marj and Darnah. Rising sharply in two steps, the first reaching 985 feet (300 m)...

narrow belt of ridges and hills in Ghana, western Africa. They extend in a southwest-northeast line for about 200 miles (320 km) from the Densu River mouth (near Accra) on the Atlantic coast to the boundary with Togo. Averaging 1,500 feet (460 m) in...

segment of the Pacific mountain system that extends generally northward and eastward in an arc for about 400 miles (650 km) from the Aleutian Range to the Yukon boundary in southern Alaska, U.S. Mount McKinley, which reaches an elevation of 20,320 feet...

three principal mountain groups—the Brooks Range, Alaska Range, and Aleutian Range—found in Alaska. The mountain ranges of Alaska give their state a rugged and beautiful terrain across its entire expanse. They include the highest peak in North America...

area of extinct volcanoes in the Lazio (Latium) regione of central Italy, southeast of Rome. The hills consist of an outer circle, 6–8 miles (10–13 km) in diameter, rising to 3,113 feet (949 m) at Mount Cavo, and an inner crater rim, about 1.5 miles...

part of the Rhaetian Alps in eastern Switzerland, lying in Graubünden canton to the north of the resort of Saint Moritz. The mountains extend northeastward from the Splügen Pass (6,932 feet [2,113 m]) to the Flüela Pass (7,818 feet [2,383 m]), and they...

segment of the Pacific mountain system, western North America. The range extends southwestward for about 600 miles (1,000 km) from the west end of the Alaska Range to the head of Cook Inlet of the Gulf of Alaska, Alaska, U.S. The Aleutian Islands represent...